# AI 在本节中，我们回顾学习实体的AI控制。 ## 在编辑器中添加 ![image-20240923123129331](./assets/image-20240923123129331.png) 依旧以守卫实体为例，我们可以看到在行为包组件中添加了很多以“行为.”开头的组件。这些组件便是与AI行为有关的组件。 ![image-20240923123354653](./assets/image-20240923123354653.png) 我们也可以自行添加更多的其他行为。这些行为组件英文都是以`behavior.`开头。 ## 实际文件 我们来观察守卫实体的行为包定义文件： ```json { "format_version": "1.20.10", "minecraft:entity": { "component_groups": { "minecraft:can_break_doors": { "minecraft:annotation.break_door": { } }, "minecraft:can_have_equipment": { "minecraft:equipment": { "table": "loot_tables/entities/zombie_equipment.json" } }, "minecraft:convert_to_baby_drowned": { "minecraft:is_shaking": { }, "minecraft:transformation": { "delay": { "value": 15 }, "drop_equipment": true, "into": "minecraft:drowned", "transformation_sound": "convert_to_drowned" } }, "minecraft:convert_to_drowned": { "minecraft:is_shaking": { }, "minecraft:transformation": { "delay": { "value": 15 }, "drop_equipment": true, "into": "minecraft:drowned", "transformation_sound": "convert_to_drowned" } }, "minecraft:look_to_start_drowned_transformation": { "minecraft:environment_sensor": { "triggers": { "event": "minecraft:start_transforming", "filters": { "operator": "==", "subject": "self", "test": "is_underwater", "value": true } } } }, "minecraft:start_drowned_transformation": { "minecraft:environment_sensor": { "triggers": { "event": "minecraft:stop_transforming", "filters": { "operator": "==", "subject": "self", "test": "is_underwater", "value": false } } }, "minecraft:timer": { "looping": false, "time": 30, "time_down_event": { "event": "minecraft:convert_to_drowned" } } }, "minecraft:zombie_adult": { "minecraft:behavior.mount_pathing": { "priority": 2, "speed_multiplier": 1.25, "target_dist": 0.0, "track_target": true }, "minecraft:experience_reward": { "on_death": "query.last_hit_by_player ? 5 + (query.equipment_count * Math.Random(1,3)) : 0" }, "minecraft:movement": { "value": 0.23 }, "minecraft:rideable": { "family_types": [ "zombie" ], "seat_count": 1, "seats": { "lock_rider_rotation": 0, "position": [ 0.0, 1.1, -0.35 ] } } }, "minecraft:zombie_baby": { "minecraft:experience_reward": { "on_death": "query.last_hit_by_player ? 12 + (query.equipment_count * Math.Random(1,3)) : 0" }, "minecraft:is_baby": { }, "minecraft:movement": { "value": 0.35 }, "minecraft:scale": { "value": 0.5 } }, "minecraft:zombie_jockey": { "minecraft:behavior.find_mount": { "max_failed_attempts": 20, "priority": 1, "start_delay": 15, "within_radius": 16 } } }, "components": { "minecraft:behavior.delayed_attack": { "attack_duration": 1.0 }, "minecraft:behavior.equip_item": { "priority": 2 }, "minecraft:behavior.hurt_by_target": { "priority": 1 }, "minecraft:behavior.look_at_player": { "look_distance": 6, "priority": 8, "probability": 0.02 }, "minecraft:behavior.melee_attack": { "priority": 3 }, "minecraft:behavior.nearest_attackable_target": { "entity_types": [ { "filters": { "any_of": [ { "subject": "other", "test": "is_family", "value": "player" }, { "subject": "other", "test": "is_family", "value": "snowgolem" }, { "subject": "other", "test": "is_family", "value": "irongolem" } ] }, "max_dist": 35 }, { "filters": { "any_of": [ { "subject": "other", "test": "is_family", "value": "villager" }, { "subject": "other", "test": "is_family", "value": "wandering_trader" } ] }, "max_dist": 35, "must_see": false }, { "filters": { "all_of": [ { "subject": "other", "test": "is_family", "value": "baby_turtle" }, { "operator": "!=", "subject": "other", "test": "in_water", "value": true } ] }, "max_dist": 35 } ], "must_see": true, "must_see_forget_duration": 17.0, "priority": 2, "reselect_targets": true, "within_radius": 25.0 }, "minecraft:behavior.pickup_items": { "can_pickup_any_item": true, "excluded_items": [ "minecraft:glow_ink_sac" ], "goal_radius": 2, "max_dist": 3, "pickup_based_on_chance": true, "priority": 6, "speed_multiplier": 1.0 }, "minecraft:behavior.random_look_around": { "priority": 9 }, "minecraft:behavior.random_stroll": { "priority": 7, "speed_multiplier": 1 }, "minecraft:behavior.stomp_turtle_egg": { "goal_radius": 1.14, "interval": 20, "priority": 4, "search_height": 2, "search_range": 10, "speed_multiplier": 1 }, "minecraft:breathable": { "breathes_air": true, "breathes_water": true, "suffocate_time": 0, "total_supply": 15 }, "minecraft:burns_in_daylight": { }, "minecraft:can_climb": { }, "minecraft:collision_box": { "height": 1.9, "width": 0.6 }, "minecraft:conditional_bandwidth_optimization": { }, "minecraft:despawn": { "despawn_from_distance": { } }, "minecraft:environment_sensor": { "triggers": { "event": "minecraft:start_transforming", "filters": { "operator": "==", "test": "is_underwater", "value": true } } }, "minecraft:equip_item": { }, "minecraft:health": { "max": 40, "value": 40 }, "minecraft:hurt_on_condition": { "damage_conditions": [ { "cause": "lava", "damage_per_tick": 4, "filters": { "operator": "==", "subject": "self", "test": "in_lava", "value": true } } ] }, "minecraft:is_hidden_when_invisible": { }, "minecraft:jump.static": { }, "minecraft:loot": { "table": "loot_tables/entities/zombie.json" }, "minecraft:movement.basic": { }, "minecraft:nameable": { }, "minecraft:navigation.walk": { "can_break_doors": true, "can_pass_doors": true, "can_walk": true, "is_amphibious": true }, "minecraft:persistent": { }, "minecraft:physics": { }, "minecraft:pushable": { "is_pushable": true, "is_pushable_by_piston": true }, "minecraft:shareables": { "items": [ { "item": "minecraft:netherite_sword", "priority": 0, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:diamond_sword", "priority": 1, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:iron_sword", "priority": 2, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:stone_sword", "priority": 3, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:golden_sword", "priority": 4, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:wooden_sword", "priority": 5, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:netherite_helmet", "priority": 0, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:diamond_helmet", "priority": 1, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:iron_helmet", "priority": 2, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:chainmail_helmet", "priority": 3, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:golden_helmet", "priority": 4, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:leather_helmet", "priority": 5, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:turtle_helmet", "priority": 6, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:skull:0", "priority": 7, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:skull:1", "priority": 7, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:carved_pumpkin", "priority": 7, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:netherite_chestplate", "priority": 0, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:diamond_chestplate", "priority": 1, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:iron_chestplate", "priority": 2, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:chainmail_chestplate", "priority": 3, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:golden_chestplate", "priority": 4, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:leather_chestplate", "priority": 5, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:netherite_leggings", "priority": 0, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:diamond_leggings", "priority": 1, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:iron_leggings", "priority": 2, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:chainmail_leggings", "priority": 3, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:golden_leggings", "priority": 4, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:leather_leggings", "priority": 5, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:netherite_boots", "priority": 0, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:diamond_boots", "priority": 1, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:iron_boots", "priority": 2, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:chainmail_boots", "priority": 3, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:golden_boots", "priority": 4, "surplus_amount": 1, "want_amount": 1 }, { "item": "minecraft:leather_boots", "priority": 5, "surplus_amount": 1, "want_amount": 1 } ], "singular_pickup": true }, "minecraft:type_family": { "family": [ "zombie", "undead", "monster", "mob" ] } }, "description": { "identifier": "test:guard", "is_experimental": false, "is_spawnable": true, "is_summonable": true }, "events": { "minecraft:as_adult": { "add": { "component_groups": [ "minecraft:zombie_adult" ] } }, "minecraft:as_baby": { "add": { "component_groups": [ "minecraft:zombie_baby" ] } }, "minecraft:convert_to_drowned": { "sequence": [ { "add": { "component_groups": [ "minecraft:convert_to_drowned" ] }, "filters": { "operator": "!=", "test": "has_component", "value": "minecraft:is_baby" }, "remove": { "component_groups": [ "minecraft:start_drowned_transformation" ] } }, { "add": { "component_groups": [ "minecraft:convert_to_baby_drowned" ] }, "filters": { "test": "has_component", "value": "minecraft:is_baby" }, "remove": { "component_groups": [ "minecraft:start_drowned_transformation" ] } } ] }, "minecraft:entity_spawned": { "sequence": [ { "randomize": [ { "add": { "component_groups": [ "minecraft:zombie_adult", "minecraft:can_have_equipment" ] }, "remove": { }, "weight": 380 }, { "add": { "component_groups": [ "minecraft:zombie_baby", "minecraft:can_have_equipment" ] }, "remove": { }, "weight": 17 }, { "add": { "component_groups": [ "minecraft:zombie_baby", "minecraft:zombie_jockey", "minecraft:can_have_equipment" ] }, "remove": { }, "weight": 3 } ] }, { "randomize": [ { "add": { "component_groups": [ "minecraft:can_break_doors" ] }, "weight": 10 }, { "weight": 90 } ] } ] }, "minecraft:start_transforming": { "add": { "component_groups": [ "minecraft:start_drowned_transformation" ] }, "remove": { "component_groups": [ "minecraft:look_to_start_drowned_transformation" ] } }, "minecraft:stop_transforming": { "add": { "component_groups": [ "minecraft:look_to_start_drowned_transformation" ] }, "remove": { "component_groups": [ "minecraft:start_drowned_transformation" ] } } } } } ``` 这相当的复杂，但我们仔细观察，依旧可以在`components`下找到`minecraft:behavior.`开头的相关组件。这边是与编辑器中行为组件相对应的实际文件中的实体组件。特别地，这样的组件被称为AI意向（AI Goal）组件。 比如，最上方的`minecraft:behavior.delayed_attack`便代表实体具有延迟攻击意向。你可以在官方参考文档[国际版 - 实体AI意向列表](https://mc.163.com/dev/mcmanual/mc-dev/mcguide/20-%E7%8E%A9%E6%B3%95%E5%BC%80%E5%8F%91/100-%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99/13-AIGoalList.html?catalog=1)中找到所有AI意向的列表。 每一个AI意向都可选地接受一个`priority`字段，代表该意向的优先级，优先级以值更小的为更优先。每一个AI意向也可选地接受一个`control_flags`数组，其中可以添加字符串`look`、`move`、`jump`，用于调整该意向使用的控制旗标。大部分意向的控制旗标是默认选择好的，但对于某一些意向来说，精准调整控制旗标有助于精准控制意向触发的时机，例如`minecraft:behavior.timer_flag_1`、`minecraft:behavior.timer_flag_2`、`minecraft:behavior.timer_flag_3`等计时器意向。 关于生物AI意向的相关机制内容，可以参考Minecraft Wiki上的[生物AI](https://zh.minecraft.wiki/w/%E7%94%9F%E7%89%A9AI)页面，学习相关内容。